python-mysqlHow can I compare and contrast using Python with MySQL versus PostgreSQL?
Python can be used to compare and contrast data stored in MySQL and PostgreSQL databases. The two databases have many similarities, but there are also some major differences.
For example, MySQL is an open source database, while PostgreSQL is an object-relational database. MySQL is also more popular than PostgreSQL, but PostgreSQL offers more advanced features.
The following example code demonstrates how to compare and contrast data stored in MySQL and PostgreSQL databases using Python:
import mysql.connector
import psycopg2
# connect to MySQL
mydb = mysql.connector.connect(
host="localhost",
user="root",
passwd="password"
)
# connect to PostgreSQL
pgdb = psycopg2.connect(
host="localhost",
user="postgres",
password="password"
)
# compare data in MySQL and PostgreSQL
mycursor = mydb.cursor()
pgcursor = pgdb.cursor()
mycursor.execute("SELECT * FROM table")
pgcursor.execute("SELECT * FROM table")
myresult = mycursor.fetchall()
pgresult = pgcursor.fetchall()
for row in myresult:
if row not in pgresult:
print(row)
Code explanation
import mysql.connector
andimport psycopg2
- imports the necessary modules for connecting to MySQL and PostgreSQL databases.mydb = mysql.connector.connect()
andpgdb = psycopg2.connect()
- establishes a connection to the MySQL and PostgreSQL databases.mycursor.execute()
andpgcursor.execute()
- executes a query to retrieve data from the MySQL and PostgreSQL databases.myresult = mycursor.fetchall()
andpgresult = pgcursor.fetchall()
- fetches the results of the query from the MySQL and PostgreSQL databases.for row in myresult:
- iterates through the results of the query from the MySQL database.if row not in pgresult:
- checks if the current row from the MySQL database is not present in the PostgreSQL database.print(row)
- prints the current row from the MySQL database if it is not present in the PostgreSQL database.
Helpful links
More of Python Mysql
- How can I use Python to interact with a MySQL database using YAML?
- How can I connect Python to a MySQL database?
- How can I connect Python to a MySQL database using an Xserver?
- How can I create a MySQL backup without using mysqldump in Python?
- How do I use Python to query MySQL with multiple conditions?
- How can I connect Python and MySQL?
- How can I connect to MySQL using Python?
- How can I use Yum to install the MySQLdb Python module?
- How can I use Python to yield results from a MySQL database?
- How do I connect to XAMPP MySQL using Python?
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